Thyristor Bridge Firing Control: Output drive pulse for 6/12-pulse armature thyristor rectifier bridge, stable phase-shift trigger to regulate excitation output voltage.
Multi-path High-impedance Signal Sampling: Equipped with 4 groups CT current input terminals (X231/X232~X261/X262), high-ohm measurement of armature AC/DC voltage + armature residual ground leakage current (standard 5mA detection threshold).
Per-channel 180VDC Galvanic Isolation: All measurement & trigger channels isolated up to 180VDC dielectric withstand, isolate surge interference from power grid and armature high-voltage side to protect main control circuit.
Status LED Fault Indication: Independent indicator lamps for power, trigger output and sampling channel, fast on-site fault pinpoint without extra testing equipment.
Fail-safe AO Freeze Function: All programmable analog outputs lock at existing value upon module failure or bus interruption to avoid abnormal excitation runaway.
V24 Serial Communication: Built-in multi-channel isolated serial port for data exchange between armature measurement circuit and upper excitation master controller.
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As indispensable armature loop core spare of ABB generator static excitation system, GDC806A0101 fixes typical field failures: excitation output voltage out of control, thyristor bridge no firing pulse, DCS cannot collect armature voltage/current data, ground leakage detection invalid, partial sampling channel burnout caused by PCB aging and surge breakdown. Fully consistent with original pin definition, backplane bus and cabinet installation dimension, direct plug-and-play replacement without modifying excitation control program or field CT wiring, minimize generator shutdown maintenance loss. Two supply options: factory sealed original new with ABB official datasheet; refurbished version via component screening, full trigger+sampling function test +72h continuous rack aging inspection, both covered unified 12-month global warranty for regular spare stocking and urgent breakdown rush delivery.
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| Item | Specification |
|---|---|
| Model | GDC806A0101, Part No:3BHE028761R0101 |
| Applicable System | ABB Synchronous Generator Static Excitation Cabinet |
| Core Function | Thyristor firing + armature voltage/current/earth residual measurement |
| CT Input | 4 groups AC current input for mains side CT acquisition |
| Channel Isolation | 180VDC dielectric withstand per signal channel |
| Power Supply | 24VDC ±15% from cabinet backplane, reverse & overvoltage protection |
| Mounting | Standard single-slot plug-in for ABB excitation rack |
| Operating Temp | -25℃ ~ +70℃ |
| Storage Temp | -40℃ ~ +85℃ |
| Ambient Humidity | 5%~90%RH non-condensing |
| Dimension(W×H×D) | 252×278×36mm |
| Net Weight | ≈2.0kg |
| Certification | CE, IEC61010 power industry safety standard |
| MTBF | ＞900,000 working hours |
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Thermal Power Plant: Turbo-generator ABB static excitation cabinet armature control spare
Hydropower Station: Hydro-generator excitation thyristor trigger & armature measurement board
Captive Power Plant: Steel, cement, chemical factory self-owned generator excitation overhaul spare
Grid Peak Regulation Plant: Excitation cabinet retrofitting and spare inventory stocking
Integrated Trigger+Measurement All-in-one Design: Combines thyristor firing and multi-point electrical quantity sampling to reduce spare part varieties
High Isolation Anti-surge Circuit: Single channel short-circuit will not damage adjacent circuits
Three-proof Coated PCB: Adapt high-temperature, dusty, high-humidity power plant cabinet harsh environment
Plug & Play Replacement: No parameter download or program modification after module swap, quick commissioning
Fail-safe Output Locking: Prevent excitation runaway caused by module sudden fault
New & Refurbished Dual Inventory: Separate stock for bulk tender and emergency unit outage repair
Full Pre-shipment QC: Every unit passes full trigger pulse & analog sampling inspection before delivery
Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.
2. What payment methods and currencies do you accept?
To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.
How many parts do you currently have in stock?
We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.
Who can I contact if I encounter any problems?
Our experienced customer service team will handle any issues after you place your order.
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